Sodium Silicate

Sodium silicate (waterglass) is an inorganic alkaline compound used as a builder and grease-cutting agent in industrial cleaning products. It contributes the high pH (11–12 range) characteristic of heavy-duty alkaline degreasers, which allows it to saponify oils and lift grease from metal surfaces. At concentrate strength it is an eye and skin irritant (H315, H319); at working dilution concentrations the irritancy profile is reduced but may persist depending on dilution ratio. Sodium silicate is not an organic compound and does not persist as a synthetic chemical — it hydrolyzes to silicic acid and sodium ions, which are environmentally benign. The primary environmental concern is acute pH disruption to aquatic ecosystems if large quantities reach waterways without dilution.